[MM-62408] Server Code Coverage with Fully Parallel Tests (#30078)

* TestPool

* Store infra

* Store tests updates

* Bump maximum concurrent postgres connections

* More infra

* channels/jobs

* channels/app

* channels/api4

* Protect i18n from concurrent access

* Replace some use of os.Setenv

* Remove debug

* Lint fixes

* Fix more linting

* Fix test

* Remove use of Setenv in drafts tests

* Fix flaky TestWebHubCloseConnOnDBFail

* Fix merge

* [MM-62408] Add CI job to generate test coverage (#30284)

* Add CI job to generate test coverage

* Remove use of Setenv in drafts tests

* Fix flaky TestWebHubCloseConnOnDBFail

* Fix more Setenv usage

* Fix more potential flakyness

* Remove parallelism from flaky test

* Remove conflicting env var

* Fix

* Disable parallelism

* Test atomic covermode

* Disable parallelism

* Enable parallelism

* Add upload coverage step

* Fix codecov.yml

* Add codecov.yml

* Remove redundant workspace field

* Add Parallel() util methods and refactor

* Fix formatting

* More formatting fixes

* Fix reporting

server/channels/jobs/jobs_test.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/mock"
@@ -64,6 +65,10 @@ func makeTeamEditionJobServer(t *testing.T) (*JobServer, *storetest.Store) {
 }
 
 func TestClaimJob(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("error claiming job", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)
 
@@ -141,6 +146,10 @@ func TestClaimJob(t *testing.T) {
 }
 
 func TestSetJobProgress(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("error setting progress", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)
 
@@ -180,6 +189,10 @@ func TestSetJobProgress(t *testing.T) {
 }
 
 func TestSetJobWarning(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("error setting status", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)
 
@@ -216,6 +229,10 @@ func TestSetJobWarning(t *testing.T) {
 }
 
 func TestSetJobSuccess(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("error setting status", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)
 
@@ -261,6 +278,10 @@ func TestSetJobSuccess(t *testing.T) {
 }
 
 func TestSetJobError(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("nil provided job error", func(t *testing.T) {
 		t.Run("error setting status", func(t *testing.T) {
 			jobServer, mockStore, _ := makeJobServer(t)
@@ -448,6 +469,10 @@ func TestSetJobError(t *testing.T) {
 }
 
 func TestSetJobCanceled(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("error setting status", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)
 
@@ -493,6 +518,10 @@ func TestSetJobCanceled(t *testing.T) {
 }
 
 func TestUpdateInProgressJobData(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("error updating", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)
 
@@ -527,6 +556,10 @@ func TestUpdateInProgressJobData(t *testing.T) {
 }
 
 func TestHandleJobPanic(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	t.Run("no panic", func(t *testing.T) {
 		logger := mlog.CreateConsoleTestLogger(t)
 		jobServer, _, _ := makeJobServer(t)
@@ -589,6 +622,10 @@ func TestHandleJobPanic(t *testing.T) {
 }
 
 func TestRequestCancellation(t *testing.T) {
+	if os.Getenv("ENABLE_FULLY_PARALLEL_TESTS") == "true" {
+		t.Parallel()
+	}
+
 	ctx := request.TestContext(t)
 	t.Run("error cancelling", func(t *testing.T) {
 		jobServer, mockStore, _ := makeJobServer(t)